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Wall-crossing from supersymmetric galaxies
Published 30 Jul 2010 in hep-th | (1008.0030v1)
Abstract: We give an elementary physical derivation of the Kontsevich-Soibelman wall crossing formula, valid for any theory with a 4d N=2 supergravity description. Our argument leads to a slight generalization of the formula, which relates monodromy to the BPS spectrum.
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